Finding the Fourth Proportional to 12,727.39, 19,086.52 and 4,405.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,727.39 : 19,086.52 = 4,405.15 : x
2. Step 2: Convert to fraction form
   12,727.39/19,086.52 = 4,405.15/x
3. Step 3: Cross multiply
   12,727.39x = 19,086.52 × 4,405.15
4. Step 4: Simplify right side
   12,727.39x = 84,078,983.58
5. Step 5: Solve for x
   x = 84,078,983.58/12,727.39
6. Step 6: Final answer
   x = 6,606.14